The U.S.-Iranian nuclear standoff — marked by decades of failed diplomacy, escalating sanctions, and intermittent proxy conflicts — reached its most consequential inflection point on February 28, 2026, when the United States and Israel initiated coordinated military strikes on Iran. Dubbed Operation Epic Fury by U.S. Central Command and Operation Roaring Lion by Israel, the campaign targeted Iran's missile production infrastructure, military command nodes, and the remnants of its nuclear program. The strikes came just two days after a final round of indirect nuclear talks in Geneva failed to produce a framework agreement, marking the definitive end of a diplomatic track that had been launched nearly a year earlier.

The Diplomatic Track: Three Rounds, No Deal

The negotiations that preceded the strikes were themselves the product of an unusual diplomatic opening. In early April 2025, President Trump sent a direct letter to Iranian Supreme Leader Ali Khamenei, proposing renewed talks on Tehran's nuclear program and setting a 60-day deadline for an agreement. The first round of high-level, Omani-mediated talks opened on April 12, 2025, in Muscat, led by U.S. Special Envoy Steve Witkoff and Iranian Foreign Minister Abbas Araghchi. Subsequent rounds moved to Rome and back to Muscat, with technical-level discussions between Director of Policy Planning Michael Anton and Iran's Deputy Foreign Minister Majid Takht-Ravanchi attempting to construct a framework.

The first diplomatic cycle collapsed when the 60-day deadline passed without agreement in June 2025, triggering a limited U.S. strike campaign — Operation Midnight Hammer — targeting Iran's primary enrichment facilities at Fordow and Natanz and its metallurgy complex at Isfahan. Iran suspended talks following those strikes but resumed engagement in February 2026 under renewed diplomatic pressure, with a second round of indirect negotiations beginning February 6, 2026, in Muscat before moving to Geneva.

According to Reuters, the Geneva session on February 26 — the third and final round — ended with Omani Foreign Minister Badr Albusaidi describing "significant progress" while simultaneously acknowledging that no breakthrough had been achieved. Araghchi told Iranian state television that the two sides had reached agreement on some issues "but there are differences regarding some other issues," and confirmed that Iran's core demand remained the lifting of U.S. sanctions. The U.S. negotiating team, per a senior official quoted by Axios, called the day "positive" — a characterization that proved insufficient to avert military action.

"Iran refused, just as it has for decades and decades. They rejected every opportunity to renounce their nuclear ambitions, and we can't take it anymore."

— President Donald Trump, TruthSocial address announcing Operation Epic Fury, February 28, 2026

Operation Epic Fury: Objectives and Structure

In his announcement — posted on TruthSocial at 2:00 AM EST rather than delivered through a formal address to Congress or the press — President Trump outlined four military objectives for Operation Epic Fury: preventing Iran from acquiring a nuclear weapon, destroying its ballistic missile arsenal and production infrastructure, degrading its proxy networks, and annihilating its naval capabilities. The administration notified the congressional Gang of Eight shortly before strikes commenced, in lieu of a formal War Powers notification. According to an analysis by the Center for Strategic and International Studies (CSIS), the administration also articulated a political end-state: regime change from within Iran, framed as an aspiration rather than a formal military objective.

CENTCOM Commander Admiral Brad Cooper confirmed that more than 50,000 U.S. troops, 200 fighter aircraft, two aircraft carrier strike groups, and strategic bombers are participating in the operation. Cooper also publicly acknowledged the use of Army Precision Strike Missiles (PrSM) — a short-range ballistic missile with a range exceeding the 310-mile limit previously prohibited under the now-defunct Intermediate-Range Nuclear Forces (INF) Treaty — against targets on Iranian soil. The operational division of labor between the U.S. and Israel appears to reflect comparative advantage: Israeli forces have concentrated on leadership decapitation strikes, while U.S. forces are conducting large-scale degradation of Iranian military and missile production capabilities.

On the nuclear dimension specifically, the strikes build on the damage inflicted during Operation Midnight Hammer. Iran made limited progress in rehabilitating Fordow, Natanz, and Isfahan between June 2025 and February 2026, per reporting by NPR in November 2025. Current strikes appear to be targeting peripheral nuclear infrastructure — administrative hubs, dual-use scientific research facilities, and explosive research sites including Parchin — with unconfirmed reports of strikes on the Iran Atomic Energy Agency headquarters in Tehran. The most acute escalatory risk centers on the Bushehr civilian nuclear reactor, which Iran operates in partnership with Russia's state atomic energy corporation Rosatom.

The economic implications of a prolonged U.S. military engagement in the Persian Gulf are already reverberating through global energy and financial markets. As Global Market Updates has tracked, oil price volatility spiked sharply following the February 28 strikes, with shipping insurance premiums in the Strait of Hormuz corridor surging to levels unseen since the height of the 2023–2024 Red Sea crisis.

Policy Implications: What Comes Next

The collapse of U.S.-Iran nuclear diplomacy raises fundamental questions about the future architecture of Middle East security policy. Iran has suspended nuclear talks indefinitely following the strikes, with senior official Ali Larijani publicly ruling out further dialogue under current conditions. The war has already begun expanding beyond Iranian territory: Israeli forces have resumed operations in Lebanon, and Iranian retaliatory drone strikes killed four U.S. Army Reserve soldiers in Kuwait on March 1 — Capt. Cody A. Khork, Sgt. 1st Class Noah L. Tietjens, Sgt. 1st Class Nicole M. Amor, and Sgt. Declan J. Coady, all assigned to the 103rd Sustainment Command in Des Moines, Iowa, per DoD announcement.

The administration's strategic bet is that sustained military pressure will either compel an Iranian leadership collapse — enabling a post-IRGC government to negotiate — or sufficiently degrade Iran's nuclear and missile capabilities to set back its weapons program by years. Critics of this framing, including analysts at the Center for Strategic and International Studies, note the inherent risk that degrading the Iranian state without achieving regime change may produce a more unstable, radicalized successor, potentially accelerating nuclear hedging rather than eliminating it.

For U.S. alliances and partnerships, the conflict's trajectory will test coalition cohesion. Nations outside the region are already struggling to evacuate hundreds of thousands of nationals from conflict zones. European partners, who were not formally consulted prior to the February 28 strikes, face pressure to either endorse or distance themselves from the U.S.-Israeli operation — a dynamic with significant implications for NATO unity and transatlantic diplomatic relations, as Foreign Diplomacy has been tracking in its coverage of allied responses to the conflict.

Congressional oversight of the operation remains an open question. The War Powers Resolution requires a formal report to Congress within 48 hours of deploying forces into hostilities; the administration's notification to the Gang of Eight before strikes — rather than a formal WPR notification after — sets up a potential constitutional confrontation over war-making authority that several senior lawmakers have already flagged publicly.

The coming days will determine whether Operation Epic Fury achieves the rapid degradation objectives its architects envision, or whether the region settles into a prolonged conflict with uncertain escalation dynamics — and whether U.S. diplomatic infrastructure, severely strained by the collapse of the Geneva talks, retains the capacity to manage an eventual off-ramp.